The red algae reproduce:
1. | asexually by non motile spores and sexually by non motile gametes |
2. | asexually by non motile spores and sexually by motile gametes |
3. | asexually by motile spores and sexually by non motile gametes |
4. | asexually by motile spores and sexually by motile gametes |
Sexual reproduction takes place through non flagellated gametes that are similar in size in:
1. | Ulothrix | 2. | Spirogyra |
3. | Volvox | 4. | Fucus |
The term ‘strobilus’ in a gymnosperm defines a:
1. | collection of megasporophylls |
2. | collection of microsporophylls |
3. | site of sporangial development |
4. | collection of megasporophylls, microsporophylls and/or a site of sporangial development |
Female sex organs of gymnosperms are called:
1. | Archegonia | 2. | Female strobili |
3. | Megasporangium | 4. | Megasporophyll |
The microstrobilus in gymnosperms represents the:
1. | "female" cone | 2. | megasporangium-bearing cone |
3. | pollen-bearing cone | 4. | none of these |
In angiosperms, one of the male gametes fuses with the secondary nucleus to produce:
1. Endosperm
2. Zygote
3. Embryo
4. Primary endosperm nucleus
Identify the incorrect statement regarding algae:
1. | Algae contain chlorophyll |
2. | Algae are autotrophic |
3. | Body of an alga is composed of pseudoparenchyma and hyphae |
4. | Cell wall of an alga is composed of true cellulose. |
A difference between a gymnosperm and an angiosperm would be:
1. Lack of a flower
2. Undeveloped vascular tissue
3. Xylem is mainly composed of vessels and phloem contains companion cell in angiosperms
4. Microspore grows into a pollen tube
Which of the following is not seen in red algae?
1. | 2 unequal flagella | 2. | Cellulose cell wall |
3. | Phycoerythrin | 4. | Floridean starch |
The bryophytes are also called as the amphibians of plants kingdom mainly because:
1. they respire through the moist epidermis
2. they depend on water for sexual reproduction
3. they require more water than most plants
4. they lack true roots